[karl_schlagenfu]

With Microsoft I was able to use my email for 2 weeks before they blocked it, they don't require the mobile number on sign up. It was a legitimate email, not spamming etc. so it was pretty bad of them.

LinkedIn is even worse, every week they ask me to add a profile photo even after I decline, and I pay for LinkedIn premium. Really scummy tactics.

[thaumasiotes]

I tried to create a hotmail account a couple of days ago; while they don't require the mobile number on signup, they do require it before you're allowed to send any email.